foreshock in English

noun
1
a mild tremor preceding the violent shaking movement of an earthquake.
Probably the most spectacular example was the short-term prediction of the 1975, M 7.3, Haicheng earthquake by the Chinese, based on earthquake foreshocks , unusual animal behaviour, and a few other precursors.

Use "foreshock" in a sentence

Below are sample sentences containing the word "foreshock" from the English Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "foreshock", or refer to the context using the word "foreshock" in the English Dictionary.

1. The 7.1 mainshock was preceded by a 6.6 magnitude foreshock some 48 minutes previous.

2. If there is a foreshock, it will register, and you just might have time to evacuate.

3. Even in areas where foreshocks are fairly common, there is no way of distinguishing a foreshock from an independent earthquake.

4. This earthquake is regarded as a foreshock of the 2004 Indian Ocean earthquake, which had an epicenter about 60 km to the northwest.

5. Aftershocks, however, are often so strong and so long after the main quake that they may be considered the main earthquake and the main quake may be re-categorized as a foreshock.